Home / 4,155.40-5,725.76-2,826.80

Finding the Fourth Proportional to 4,155.40, 5,725.76 and 2,826.80

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Solution

The fourth proportional to 4,155.40, 5,725.76 and 2,826.80 is: 3,895.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,155.40 : 5,725.76 = 2,826.80 : x
  2. Step 2: Convert to fraction form
    4,155.40/5,725.76 = 2,826.80/x
  3. Step 3: Cross multiply
    4,155.40x = 5,725.76 × 2,826.80
  4. Step 4: Simplify right side
    4,155.40x = 16,185,580.93
  5. Step 5: Solve for x
    x = 16,185,580.93/4,155.40
  6. Step 6: Final answer
    x = 3,895.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.